File guide and gauge for chain saws



Dec. 24, 1957 c. R. SIMMONS FILE GUIDE AND GAUGE FOR .CHAIN sAws Filedoct, 22. 1955 Il l y [I] @um @Illl 2`6\ 27 INVENTOR. COLUMBUS R S|MMONSVVWV,%//////////////// United States Patent "i FILE GUIDE AND GAUGE FORCHAIN SAWS Columbus R. Simmons, Salem, Oreg., assignor to William C.Dalziel, Sandy, Oreg.

This invention relates to a file guide and gauge for chain saws and isparticularly adapted for tiling the chipper type of teeth.

The primary object of this invention is to provide a tile guide andgauge that can be used out on the job, giving precision accuracy in theguiding and gauging of the le inthe filing of the chipper teethv ofchain saws.

A further object of the invention is the provision of a file guide thatwill operate on the chain while mounted on the saw bar guide withoutremoving the chain therefrom. t v

These and other incidental objects will be apparent in the drawings,specification and claims.

Referring to the drawings:

Figure 1 is an inverted perspective view of the frame or body of theguide, having the file and its guide removed therefrom.

Figure 2 is a side view of the le and guide removed from the body orframe ofthe device.

v'Figure 3 i's an end sectional View, taken on line 3-3 of Figure 2,illustrating how the guide rod and iile are mounted within the operatinghandle.

Figure 4 is a fragmentary portion of a chain saw guide bar, togetherwith the chain having my new and improved file 'guide and gauge mountedthereon, parts broken away for convenience of illustration.

Figure 5 is a plan view of Figure 4, partially broken away forconvenience of illustration.

Figure 6 is an end sectional view of the chain saw guide bar, includingthe chain and having my new and improved guide and gauge mountedthereon. This view is taken on line 6-6 of Figure 5 looking in thedirection indicated.

Figure 7 is a perspective view of one of the shims for positioning thele in determining the shape of the cutting edge of the tooth.

Referring more specifically to the drawings:

My new and improved guide and gauge consists of a frame 1, comprised ofa vertical plate 2, having a plate 3 formed on its upper edge at rightangles to the said plate 2. The upper plate 3 has an edge portion 4extending at an acute angle to the upper edge of plate 2, as shown inFigs. 1 and 5. This angle may vary depending upon the angle that thetile is going to operate in regards to the tooth being led.

An adjustable gauge plate 5 is secured to the horizontal plate 3 by wayof the bolts 6. The position of the gauge plate 5 is governed by theshims 7, which can be removed or replaced between the gauge bar 5 andthe angle plate 3. The purpose of this will be described later on.

The usual round le 8 is xedly secured within the handle 9, together withthe guide rod 10 in the following manner: The handle 9 is cored out at11 to receive a special U-shaped keeper 12, having its U-bend 13contacting the inner surface of the ferrule 14 of the handle 9.

The le 8 is first dropped into the keeper, then a spacer 15 is placedover the le for separating the said le 2,817,252 Patented Dec. 24, 1957from the guide rod 10 which is next placed in the keeper., after which aset screw 16 is tightened against the rod 10, tightening the wholeassembly together within the handle, referring particularly to Figures 2and 3. The outer ends of the ile 8 and the guide rod 10 are heldtogether and spaced apart by the spacer 17, which is dxedly secured tothe guide rod 10 by the set screw 18.

The guide rod 10, referring to Figures 4, 5 and 6 particularly, issecured to the plate 3 by way of the tubular guide 19. The tubular guide19 has an arm 20 forming part thereof and extending at an angletherefrom. This arm has a slot 21 formed therein and is adapted to slideover the surface of the plate 3, being secured thereto by one of thebolts 6 and the bolt 22 by way of the wing nuts 23 and 23A. The tubularguide 19 registers with the angle 4 of the plate 3.

Referring to Figures 4, 5 and 6, I illustrate how my new and improvedguide and gauge for files is applied to the chain saw guide bar 24 andto the chain 25 for the tiling of the chipper teeth 26. The gauge plate5 contacts the upper surface 27 of the chipper teeth, while the spacers2A of the vertical plate 2 separates the said plate 2 from the chain sawbar to clear the said plate from the teeth of the saw, best illustratedin Figures 4 and 6.

The position of the chipper teeth to be filed is determined by theadjustable stop 28, which is mounted to the plate 3 by the bolt 22. Thestop 28 is threaded crosswise of the end 29 of the bolt 22. The wing nut23Al is then tightened sufficient to prevent the stop 28 from movingwhen once adjusted. The opposite end of the stop 28 is adapted to engagethe rear 31 of the chipper tooth 26 being tiled, positioning the cuttingface 32 of the tooth in regards to the end 33 of the plate 2. The plate2 is especially hardened at this point so that when the tile contactsthe point 33 of the plate the operator will cease tiling, thereforegauging the amount that each tooth is tiled.

I will now describe the operation of my new tile guide and gauge. Theoperator rst determines the elevation of the iile in regards to thecutting tip of the tooth. He

then adds or `substracts the shims 7 from the frame 1 of the device.This adjustment is determined by the type of material to be sawed. Ifthe file is adjusted high in regards to the teeth, the tip of the toothwould be tiled to a blunt point, while if the iile were adjusteddownwardly from the top of the tooth, the tooth would be shaped withmore of a chisel point.

After the gauge plate 5 has been adjusted, determining the type of toothtip to be tiled, the stop 28 is adjusted against the rear 31 of thetooth 26 for determining the amount that will be led from the tooth.Usually each group of teeth is led to completion. The tubular guide 19is then positioned on either end of the upper plate 3, depending uponwhether a right or left chipper tooth is to be tiled, then the guide 19is changed to the opposite end of the plate 3 by simply loosening thewing nuts 23 and 23A, removing the same and turning the whole assemblyover on to the opposite end of the plate 3, after which it is lockedthereto by the wing nuts 23 and 23A.

The tile handle, while not 'showing in the drawings in regards to theguide, is located on the opposite side of the saw frame or bar to thatof the vertical guide plate 2.

In operating the le, the iiler positions the vertical plate 2 againstthe side of the saw guide bar, aligning the end 30 of the guide 28against the rear 31 of the tooth to be tiled. With one hand he holds thedevice against the saw chain guide bar, while with the opposite hand heoperates the iile in ling the tooth. A's he operates the le he rotatesthe handle slightly, pivoting the le about the guide rod 10 against theface of the tooth on the forward stroke of the file, swinging the sameaway from the face of the tooth on the return stroke,V giving a naturalfeel of the tiling operation at the same time. In other words, with thisnew file guide, only one hand need operate the file while the oppositehand holds: theI guide to the Work being performed;

. I claim.'

- l. A saw le guide comprising: a` support of: isubstantiallyright-angular conguration to provide' one portion tov lie against theside` ofv a saw with the other portion overlying the saw teeth,- a guidemember mounted on said overlying portion: and' including: a tubular.lguide element, a guide rod slidable in said tubular guide element,k lesupport. means releasably mounted on said guide rod for supporting a;filein fixedA spaced: parallel relation' to said guide rod,. meansVadjustably mounted under said over-y lying portion for engaging andpositioning. the' rear edge of a sawv tooth tobe tiled relative to theAguide, a gauge plate, and shims interposed between said gauge plate andthe overlying portion of the support for adjustably mounting saidgauge'plate on the undersideV of said overlying portion to bear on 'saidplate and position the file relative to the saw teeth.

2. A saw le guide comprising a support of substantially right-angularconfiguration to` provide one portion to lie against the side of a sawwith the other portion overlying the saw teeth, a guide member mounted.on said overlying portion and including a1 tubular guide ele'- ment, aguide rod slidable in said tubular guide element, tile support meansreleasably mountedonr ysaid* guide rod for supporting a file in xedspaced parallel relation to said guide rod, and means adjustably mountedunder said overlying portion for engaging and positioning` the rear edgeof asaw tooth to be led relative to the guide, said guide membercomprising a plate supporting said tubular guide element at one end,said plate having a `slot longitudinally thereof. and opening throughthe other end thereof, and three; bolts in symmetrical relation on saidoverlying portion. and spaced so that the central bolt and one end boltcan tit said slot, whereby said guide member can bei positionedselectively at either endof said overlying portion.

3. A saw tile guide comprising a support of substantially right-angularc'onguration to provide one portion to lie against the side of a sawlwith the other portion overlyingl the saw teeth, a guide member mountedon said overlying portion and including a tubular guide element, a guiderod slidable in said tubular guide element, tile support meansreleasably mounted on said guide rod for supporting a le in xed Ispacedparallel relation to said guide rod, and means adjustably mounted undersaid overlying portion for engaging and positioning the rear edge of asaw tooth to be led relative to the guide, said tile support meansincluding a spacer member at one end of said guide rod and having asocket for removably receiving one end of a le, and a handle member atthe other end of said guide rod and including a ferrule, 'a U-shapedkeeper within said ferrule and deiining a slot open at one end to 'saidferrule, andY a spacer element removably mounted in said keeper slot forinterposition between a tile in the closed end of said slot and saidguide rod, said set screw being in said ferrule in alignment with theopen end of said keeper slot.

4. A saw file guide comprising a supportv of substantially right-angularcontiguration to provide one portion to lie against the side of a sawwith the other portion overlying the saw teeth, a guide member mountedon said overlying portion and including a tubular guide element, a guiderod slidable in said tubular guide element', tile support meansreleasably mounted on said guide rod for supporting a le in xed spacedparallel relation to 'said guide rod, a stud pivotally mounted on saidoverlying portion and having a threaded bore diametrically therethrough,and a bolt threaded in said bore and having a head with a slot thereinfor seating around the rear edge of the saw tooth to be led to positionthe guide relative thereto.

References Cited in the le of this patent UNITED STATES PATENTS 424,724Penrose Apr. l, 1890 575,192 Wilson Ian. 12, 1897 635,476 GudmundsonOct. 24, 1899 1,666,395 Miller Apr. 17, 1928 2,633,761 Butts Apr. 7,1953 2,643,553 Evanoif June 30, 1953 2,677,289 Fitch May 4, 1954y

